baber/WOPTO huggingface dataset:
Patent GB-1309432-A (GB)
Title: Frequency detection apparatus
IPC: G01P1/10
Filed: 1970-03-23
Abstract: 1309432 Frequency responsive switching circuits SUN ELECTRIC CORP 23 March 1970 [21 March 1969] 13806/70 Headings H3A and H3T A circuit for detecting whether a signal frequency or a corresponding speed is above a given value comprises a first capacitor having a variable charge path and periodically discharged by the signal, a second capacitor having a charge path and discharged when the first capacitor voltage exceeds a value, the second capacitor controlling an output switching circuit. The circuit may be used to operate brakes or an auxiliary motor but as described operates a lamp if the speed of an engine is above a given value. In Fig. 2 a capacitor 52 is charged through an adjustable constant current source 44 and, in response to a shaped pulse derived from an engine ignition system, is rapidly discharged through a transistor 30. If the speed is below a given value the gap between pulses is sufficient to allow the capacitor voltage to reach the threshold of a tunnel diode 18 so that transistor 62 is momentarily switched on and the lamp 82 turned off. The lamp is held on between the pulses by a capacitor 66 which is discharged each time transistor 62 is switched on. In Fig. 3 the tunnel diode is replaced by a P.U.T. 118 and switching hysteresis is provided by causing current through the P.U.T. to render transistor 136 conducting and this lowers the threshold voltage applied to electrode 122 of the P.U.T.  Shaping of the ignition pulses is effected in Fig. 4 in which the trailing edge of the positive input pulses switch on a P.U.T. 208 to discharge a capacitor 220 through the base of transistor 222 and thus provide an output pulse.
Patent GB-675300-A (GB)
Title: Improvements in or relating to exhaust ducting of gas-turbine engines
Inventor: LOMBARD ADRIAN ALBERT
IPC: F02K1/82
Filed: 1949-05-24
Abstract: 675,300. Gas turbine and jet propulsion plant. ROLLS-ROYCE, Ltd. May 23, 1950 [May 24, 148; May 24, 1949], Nos. 13906/49 and 13907/49. Class 110(iii) A gas turbine engine has an exhaust assembly 15 which comprises in combination an outer tubular structure 19 which is partly supported from the engine and forms the main loadbearing structure of the assembly, an imperforate, tubular, exhaust member 20 which is supported within the structure for axial relative movement therebetween and defines an annular air passage therewith, air inlet means to the passage formed in the end of the structure adjacent the engine, air outlet means from the passage adjacent its end remote from the engine and gas sealing means to prevent leakage of exhaust gases into the passage. The structure 19 comprises a tubular member 24 having reinforcing webs 25 welded thereon and a frusto-conical part 21 which are interconnected by a bolted flanged connection. The part 21 has a cylindrical extension which is bolted to the engine and the structure 19 is secured by pivoted links 18 to the aircraft. The exhaust nozzle 16 comprises a pair of interlinked segments 16a, each having inner and outer walls 32, 33 respectively and being operated by a hydraulic ram 31 pivoted to the member 24. The rams are enclosed in a two-part housing 27, 28 which is connected by a welded plate 30 to the member 24 and carries a spring metal seal 35 for co-operation with the segments 16a. The exhaust member 20 comprises intersliding sections 20a, 20b. The section 20a is secured to the structure 19 by at least three straps 43 which are welded to the section 20a and extends tangentially therefrom. The straps are riveted to a ring which fits within the structure 19 and is secured thereto by bolts 45 passing through an outer reinforcing ring 46, the wall 19 and the inner ring to engage nuts 45a welded thereon. The section 20b is secured by tangential and axially arranged straps 43, 47, respectively; the inner ring being dispensed with and the nuts welded to the straps 43. Cooling air enters the passage through ports in the part 21 and is discharged between a ring 48 on the section 20b and the wall 33. The ring 48 is adapted to engage a ring 36 on the segments 16a to limit their movement and provide a gas seal therewith whereupon the cooling air flows through the spaces between the walls 32, 33 and escapes through ports 34. Specification 640,428 is referred to.
Patent GB-514565-A (GB)
Title: Improvements in and relating to methods of and apparatus for consolidating pulverulent materials
IPC: B28B1/087
Filed: 1938-05-10
Abstract: 514,565. Moulding concrete &c. in shaking &c. machines. SHOCK CONCRETE (GREAT BRITAIN), Ltd. May 10, 1938, No. 13936. Convention date, May 10, 1937. [Class 87 (ii)] Relates to the consolidation in moulds of damp pulverulent materials as described in Specification 427,213, wherein the material is subjected' to a series of sudden individual successive impacts by causing the mould, which is rigidly secured to a heavy rigid support 3, to fall by gravity from a height not exceeding 25 mm., and suddenly arresting the fall by the impact of small isolated areas 5 of the support with members 4 of a heavy anvil 2 on a heavy rigid bed 1. According to the invention, means acting in the direction of gravity is used to assist gravity. As shown, a leaf spring is secured to the support 3 for the mould and its free ends are anchored to the anvil 2 by pivoted links 10. A piston operated by compressed air, or an electromagnet may be used for the same purpose. The invention is applicable to the manufacture of articles of concrete. The Specification as open to inspection under Sect. 91 describes the application of the invention to the consolidation of ceramics, phenol condensation products, and mixtures of metals in powder form. An example is given of the consolidation of a mixture of powdered tungsten and silver to which water is added. This subject-matter does not appear in the Specification as accepted.
Patent GB-611808-A (GB)
Title: Improvements relating to yarn winding machines
IPC: B65H54/54
Filed: 1946-05-08
Abstract: 611,808. Winding yarn. ROBBINS, N. S. May 8. 1946, No. 13940. [Class 120(ii)] In a yarn-winding machine of the spindleless type, each bobbin a is supported at one or both ends by a ball e which is loosely mounted in a housing f and rides with substantially point contact only upon a second, smaller ball g which is likewise loosely mounted in the housing f, so that the friction between the first ball and the second is less than that between therefore rotating with the bobbin so to the first ball and the bobbin, the first ball prevent abrasion thereof by the ball e. The bobbin a may be supported at its driving end by a spring-loaded conical plunger b if the housing f carried by the arm g<SP>1</SP> is spring-urged at h. In a modification, the housing f, furnished with a lubricating hole j, is also provided with an oiling wick, and the smaller ball g is pressed towards the ball e by a compression spring.
Patent GB-119503-A (GB)
Title: Improvements in Rollers and Cylinders for Printing Machines.
Inventor: RAWSTHORNE JOSEPH TWEEDALE
IPC: F16C13/00
Filed: 1917-09-28
Abstract: 119.503. Rawsthorne, J. T. Sept. 28, 1917. Printing-surfaces; impression surfaces.-Rollers or cylinders for calico and similar printing-machines comprise a central mandrel or other support to which are anchored springs or buffers pressing outwards against and resiliently supporting an outer shell of considerably larger diameter. In an engraved roller of a calico-printing machine, a number of abutting or spaced collars B, Fig. 2, of hexagonal or other shape are bolted to a central mandrel or axle A, and projections b on the collars anchor springs C or buffers which press outwards against an outer shell of copper, steel, or other metal. Creeping of the shell relative to the mandrel is prevented by a projection d, Fig. 3, on the end of the shell entering a slot a<1> in a collar ur disk A<1> secured to the end of the mandrel. In a modification, bent blade springs have their ends anchored by hoops to the flat surfaces of adjacent collars and support the shell. In a printing cylinder, two or more spiders are secured to a central shaft and are connected by longitudinal bars secured by screws or bolts around the peripheries of the spiders, spaced projections on the bars forming anchors for helical springs or rubber buffers which support the outer shell; or the spiders E, Fig. 9, may be connected by springs H which support the shell.
Patent GB-290615-A (GB)
Title: Permanent pasteurising device for milk and other liquids for domestic use
IPC: A23L3/16
Filed: 1928-05-12
Abstract: 290,615. Rottger, G. May 17, 1927, [Convention. date]. Sterilizing milk &c. - Apparatus for pasteurizing and subsequently cooling milk and other liquids comprises a container 1 for the liquid, having a projecting upper rim 2 by which it can be fitted tightly on the brim first of a pasteurizing vessel 3 and subsequently of an earthenware cooling vessel 10, so as to hang freely within these vessels. The container 1 has handle 8 and a lid 5 with a thermometer 7. The vessel 3 which contains water is heated until the milk reaches the pasteurizing temperature, about 62‹ C., and the heat source is then withdrawn the water keeping the milk at the required temperature for about 20 minutes. The container 1 is then withdrawn and after cooling in air or in cold water is placed in vessel 10 in which is cold water. The vessel 10 has porous walls through which the water percolates and evaporates on the outer surface, keeping container 1 cool. The vessels 1, 3 can be used separately in the kitchen.
Patent GB-1419794-A (GB)
Title: Processing of tubular blooms
IPC: B21D41/04
Filed: 1973-03-23
Abstract: 1419794 Tube swaging press MANNESMANN-MEER AG 23 March 1973 [28 March 1972] 14051/73 Heading B3H A press for pinching one end of a tubular bloom 13 comprises a pair of dies 8 moved simultaneously by a double acting pistoncylinder unit 5 through double armed levers 2. The dies 8 contact the outer surface of the bloom at six circumferentially spaced zones, Fig. 3 (not shown), and over at least two thirds of the circumference. The bloom is fed along rollers 14 to the press and abuts a pivoted stop 17 which initiates operation of the press. The dies are mounted on a pair of components 6 which are either guided by bushes 9 at their rear end or by a pair of levers (19), Fig. 2 (not shown), pivoted to the press frame. The reduced end of the bloom is used for mounting on a shaping broach.
Patent GB-858656-A (GB)
Title: Treatment of uranium
Inventor: WATTS BERNARD NELSON
IPC: C23C8/80
Filed: 1956-05-07
Abstract: Uranium is protected by producing thereon a layer of uranium monoxide.  The layer may be formed either by heating the metal in an atmosphere of pure water vapour at a pressure below 1 micron Hg at 500 DEG -600 DEG C., or by first forming a layer of a higher oxide or oxides on the metal (e.g. by exposure to the atmosphere, or by heating in an atmosphere of pure water vapour at a pressure of 1 micron to 10 mm. Hg at 500 DEG -600 DEG C.), and then heating in vacuo at 400 DEG -600 DEG C. to reduce the layer to the monoxide.
Patent GB-1059076-A (GB)
Title: Improvements in or relating to process for tunnelling in water-bearing ground
IPC: E21D9/06
Filed: 1964-04-06
Abstract: 1,059,076. Tunnelling. ENTERPRISES LEON CHAGNAUD, SOC. DES GRANDS TRAVAUX DE 1'EST & FILS and H. LORENZ. April 6, 1964, No. 14120/64. Heading E1F. During tunnelling in water bearing ground by means of a shield 1 having a transverse wall 12, a cushion 6 of thidotropic liquid is maintained between the ground and wall. In the construction shown in Fig. 2 the liquid supplied by one or more pipes 3 is retained by a member 5. Soil and water displaced by the liquid pressure are removed by an adjustable tube 9 which may contain a conveyor. After the excavation of a quantity of soil and water the shield is advanced by jacks 10, surplus liquid being removed through the pipes 3. In the modification shown in Fig. 4 a rotatable radial arm 15 carries a bucket 16 having a pivoted scraper 17 and reciprocable on the arm. Material discharged from the bucket passes through a crusher 19, and may be separated in a centrifuge so that liquid may be returned to the cushion through the pipes 3.
Patent GB-1183425-A (GB)
Title: Substituted Tetrahydro-1,4-Thiazine-1,1-Dioxides and their Production
Inventor: HERLINGER HEINZ
IPC: C07D279/12
Filed: 1968-03-25
Abstract: 1,183,425. Preparing substituted tetrahydrothiazine dioxides. FARBENFABRIKEN BAYER A.G. 25 March, 1968 [31 March, 1967], No. 14176/68. Heading C2C. 4-Substituted tetrahydro-1,4-thiazine-1,1-dioxides are prepared by reacting either a 1,4- thioxane-1,1-dioxide of formula or a sulphone of formula with at least the stoichiometrically required amount of a compound of formula R 5 -NH 2  at a temperature of from about 60 to 100 C. in the presence of catalytic quantities of an inorganic base of an element of the first or second main group of the Periodic Table in water or in a water-miscible solvent together with water, where R 1 , R 2 , R 3  and R 4  are hydrogen, alkyl substituted alkyl, or R 1  with R 2  and R 3  with R 4  are components of a carbocylic 6-membered ring system of which the adjacent carbon atoms of the thiazine ring also form part, and R 5  is NH 2 , C 1-3  alkyl-NH-, aliphatic, substituted aliphatic, cycloaliphatic, substituted cycloaliphatic, aralkyl, substituted aralkyl, aminoalkyl, or amino-alkyl substituted 5- or 6- membered heterocyclic. A preferred temperature range is 80 to 95 C. under atmospheric pressure.
Patent GB-529096-A (GB)
Title: Improvements relating to dynamo regulators
IPC: H02P9/22
Filed: 1939-05-12
Abstract: 529,096. Voltage regulators for generators. LUCAS, Ltd., J., and LAIRD, J. A. May 12, 1939, No. 14189. [Class 38 (iv)] A carbon-pile regulator a connected in the field winding b of a dynamo is under the action of an armature d controlled jointly by a permanent magnet e with extensions i, f to produce a permanent loading of the pile and by a winding g responsive to the dynamo voltage or current or both and providing a flux opposing that of the permanent magnet and in consequence, relieving the loading of the pile. An additional winding j carrying the field current or a fraction of it may produce a flux aiding the permanent magnet flux and a shunt u may be connected as shown to minimize hunting. The shunt path k safeguards the permanent magnet against undue demagnetizing action by the electromagnet. The spring s opposes the attractive force on the armature.
Patent GB-184885-A (GB)
Title: Improvements in or relating to wind motors
IPC: F03D5/00
Filed: 1921-05-21
Abstract: 184,885. Thornycroft, Sir J. I. May 21, 1921. Screw-motors. - Comprises a feathering vane n hinged at o to an oscillating vane support consisting of two masts a, d with a weight j to hold the masts normally in a vertical plane. The support is mounted in bearings on a framework running in two circular tracts b, c. A crank r on the vane-support drives a pump or other machine t located at the centre of the tracks b, c. A directing-vane z operates devices for turning the motor into the wind. Such devices may be, for instance, a pair of feet y and a lever connected to a crank v on the vane-support, which step the motor round the track. A catch retains the weight j should the oscillation become excessive. Dash-pots p are fitted to the vane.
Patent GB-116206-A (GB)
Title: Improvements in or relating to Casement Stays for Hinged Windows and other Hinged Articles.
IPC: E05C17/30
Filed: 1917-10-05
Abstract: 116,206. Evered & Co., and Willmott, C. Oct. 5, 1917. Stays.-The outer tubular arm a of a telescopic stay carries near its free end a lever d fitting saddlewise over the arm and provided with a depending locking-pin d<3> which enters a hole in the outer arm and one of a number of holes in the inner arm e. The pivots of the lever d are formed by projections or teats which take into holes. A heel-piece d<4> limits the lift of the lever. The pivot pin b for the outer arm a passes directly through the arm, and may screw into a fixing plate c of bridge-like form preferably made by stamping from sheet metal. To prevent disengagement of the parts when detached from the casement, a teat raised on the inner side of the tubular arm a may take into a groove in the arm c, the groove stopping short of the end.
Patent GB-134232-A (GB)
Title: Improvements in Locks for Attache Cases and the like.
Inventor: ZEFF WILLIAM WOLFE
IPC: E05B65/50
Filed: 1916-10-11
Abstract: 134,232. Zeff, W. W. Oct. 11, 1916. Hasp locks and fastenings.-In ordinary hasp locks and fastenings for attachÚ cases &c., a supplementary bolt f is provided, adapted to engage the staple of the hasp e and operated by a fingerpiece g. The bolt f is held in either position by a blade spring p in the casing snapping into recesses k in the bolt.
Patent GB-471280-A (GB)
Title: Relaxation oscillation apparatus
IPC: H03K6/02
Filed: 1936-05-22
Abstract: 471,280. Valve generating circuits. RADIOAKT.-GES. D. S. LOEWE. May 22, 1936, No. 14515. Convention date, May 24, 1935. [Class 40 (v)] The displacement of the central point of the scanning from the centre of the luminous screen, due to amplifiers for the relaxation oscillations not passing the direct-current component, is prevented by one of the following means. (1) High frequencies, of the order of the period of the return time of the relaxation oscillator 16, 17 and its harmonics, are emphasized in the amplifier, by parallel condenser and resistance units 21, 23, 24, 26 in series with grid resistances 22, 25, to such an extent that the return stroke is exaggerated by an amount equal to the displacement of the centre of the scanning. Alternatively, inductances 27, 28 with a natural oscillation of the order of the return periods are connected in series with the resistances 22, 25, and are damped by resistances 29, 30. (2) The high frequencies are exaggerated by reaction. (3) The return path of the relaxation oscillation is straightened by discharging the condenser 16 through a saturated valve. Specification 425,687 is referred to.
Patent GB-741500-A (GB)
Title: Improvements in or relating to the production of heat-sealable, transparent, cellulosic sheets and films
Inventor: WARD HERBERT JAMES
IPC: C08J7/052
Filed: 1953-05-22
Abstract: Cellulosic sheet or film is rendered heatsealable by incorporating unhardened casein into the softened sheet or film, the sheet or film being one which is transparent, smooth, dense, substantially non-porous, non-fibrous and water-sensitive. Suitable cellulosic sheet or film is of regenerated cellulose such as viscose or cuprammonium cellulose, and suitable softening agents therefor are glycerine, ethylene glycol and urea.  Other suitable cellulosic materials are such cellulose esters or ethers as are precipitated from aqueous solutions or dispersions, e.g. glycol cellulose, lowly acetylated cellulose and methyl and ethyl cellulose of low alkyl content.  "Unhardened casein" is defined as casein in the form in which it is dispersible in aqueous media on treatment with dilute caustic soda solution at room temperature.  It is preferred to use acid casein obtained from cow's milk by acidification.  The unhardened casein may be incorporated by passing the sheet or film through an aqueous dispersion containing 0.5-25 per cent of casein at 60 DEG  C. so as to give a casein content of 0.1-2 per cent based on the air-dried weight of film, the amount taken up being adjusted by squeeze rolls or the like.  In an example a film of gel regenerated cellulose is passed through a bath at 60 DEG  C. containing 6 per cent unhardened casein in aqueous dispersion, 5 per cent glycerine and 0.1 per cent of a surface active agent, the sodium salt of dodecyl naphthalene sulphonic acid.  The film is in contact with the bath for 15 secs., excess dispersion is removed by squeeze rolls and the film is dried in hot air at 70-90 DEG  C. Specifications 471,640 and 471,641, [both in Group XIII], and U.S.A. Specification 1,962,338 are referred to.
Patent GB-277405-A (GB)
Title: Improvements in or relating to alternating current rectifying devices
IPC: H01L21/00
Filed: 1926-06-09
Abstract: 277,405. Ruben, S. June 9, 1926. Contacting-solid resistances. - A dry surface contact rectifer comprises a relatively electropositive element in solid integral form, and a relatively electronegative element in pulverulent form. Materials for the electropositive element comprise tantalum, niobium, antimony, and bismuth, suitable electronegative materials being manganese oxides, iron oxides, vanadium oxides, and lead peroxide. The electropositive element is preferably provided initially with an oxide coating. The coating may be formed electrolytically, using ammonium borate as electrolyte, or a suitable coating may be produced by applying to the electrode element a paste containing powdered oxide material and an inert binder, the latter being subsequently expelled by heating. The Figure shows a rectifier applied to charging a battery B from a transformer T, the rectifier comprising an oxide-coated rod of tantalum 1 held between insulating end pieces 4, 4a in a conducting tube 3 and in contact with pulverulent lead peroxide 2.
Patent GB-1340497-A (GB)
Title: Centrifugal analyser
IPC: A47C17/38
Filed: 1970-03-25
Abstract: 1340497 Photo-metric analysis MSE HOLDINGS Ltd 19 April 1971 [25 March 1970] 14607/70 Heading G1A [Also in Division B1-2 and B8] A rotor for an analytical centrifuge comprises a central rotor feed region for feeding liquids to different axial levels of the rotor by means 25, 15 and a plurality of cuvettes 10 disposed in respective segmental regions of the rotor and having inlet openings into the central feed region which are at different axial levels. The rotor may comprise a stack of discs (31 to 33) in Fig. 2, (not shown) mounted in a temperature controlled housing 2 for rotation by motor 3, each disc including for photo-metric analysis one or more cuvettes 10 having transparent axial end walls and apertures 6 aligned with cuvettes in other discs in the stack, to enable transmission of light from source 7 through the cuvettes to photo-multiplier 8. The cuvettes are individually identified by computer 9 which receives pulses from detector 12 responsive to circular series of magnets 11 and from detector 14 responsive to a pulse from single magnet 14. Each disc may include cuvettes with inlet openings at more than one level Fig. 5, 6, 9 (not shown) and a disc may comprise separate inner and outer parts 52, 53 in Fig. 9. (not shown). In operation, liquid from metering passages 26 in rotary valve 22 is in one position of the valve forced by compressed air into feed tubes 15 and passes into the cuvettes. Reagent may be added in the same way. Liquid discharged from the cuvettes by applying pressure in the rotor central region or suction at the rotor periphery passes through annular channels 19 into collecting channel 21.